<?php
class ADODB2_firebird extends ADODB_DataDict {
	
	var $databaseType = 'firebird';
	var $seqField = false;
	var $seqPrefix = 'gen_';
	var $blobSize = 40000;	
 	
 	function ActualType($meta)
	{
		switch($meta) {
		case 'C': return 'VARCHAR';
		case 'XL': return 'VARCHAR(32000)'; 
		case 'X': return 'VARCHAR(4000)'; 
		
		case 'C2': return 'VARCHAR'; // up to 32K
		case 'X2': return 'VARCHAR(4000)';
		
		case 'B': return 'BLOB';
			
		case 'D': return 'DATE';
		case 'TS':
		case 'T': return 'TIMESTAMP';
		
		case 'L': return 'SMALLINT';
		case 'I': return 'INTEGER';
		case 'I1': return 'SMALLINT';
		case 'I2': return 'SMALLINT';
		case 'I4': return 'INTEGER';
		case 'I8': return 'INTEGER';
		
		case 'F': return 'DOUBLE PRECISION';
		case 'N': return 'DECIMAL';
		default:
			return $meta;
		}
	}
	
	function NameQuote($name = NULL)
	{
		if (!is_string($name)) {
			return FALSE;
		}
		
		$name = trim($name);
		
		if ( !is_object($this->connection) ) {
			return $name;
		}
		
		$quote = $this->connection->nameQuote;
		if ( preg_match('/^`(.+)`$/', $name, $matches) ) {
			return $quote . $matches[1] . $quote;
		}
		if ( !preg_match('/^[' . $this->nameRegex . ']+$/', $name) ) {
			return $quote . $name . $quote;
		}
		
		return $quote . $name . $quote;
	}

	function CreateDatabase($dbname, $options=false)
	{
		$options = $this->_Options($options);
		$sql = array();
		
		$sql[] = "DECLARE EXTERNAL FUNCTION LOWER CSTRING(80) RETURNS CSTRING(80) FREE_IT ENTRY_POINT 'IB_UDF_lower' MODULE_NAME 'ib_udf'";
		
		return $sql;
	}
	
	function _DropAutoIncrement($t)
	{
		if (strpos($t,'.') !== false) {
			$tarr = explode('.',$t);
			return 'DROP GENERATOR '.$tarr[0].'."gen_'.$tarr[1].'"';
		}
		return 'DROP GENERATOR "GEN_'.$t;
	}
	

	function _CreateSuffix($fname,&$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned)
	{
		$suffix = '';
		
		if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
		if ($fnotnull) $suffix .= ' NOT NULL';
		if ($fautoinc) $this->seqField = $fname;
		if ($fconstraint) $suffix .= ' '.$fconstraint;
		
		return $suffix;
	}
	function _Triggers($tabname,$tableoptions)
	{	
		if (!$this->seqField) return array();
		
		$tab1 = preg_replace( '/"/', '', $tabname );
		if ($this->schema) {
			$t = strpos($tab1,'.');
			if ($t !== false) $tab = substr($tab1,$t+1);
			else $tab = $tab1;
			$seqField = $this->seqField;
			$seqname = $this->schema.'.'.$this->seqPrefix.$tab;
			$trigname = $this->schema.'.trig_'.$this->seqPrefix.$tab;
		} else {
			$seqField = $this->seqField;
			$seqname = $this->seqPrefix.$tab1;
			$trigname = 'trig_'.$seqname;
		}
		if (isset($tableoptions['REPLACE']))
		{ $sql[] = "DROP GENERATOR \"$seqname\"";
		  $sql[] = "CREATE GENERATOR \"$seqname\"";
		  $sql[] = "ALTER TRIGGER \"$trigname\" BEFORE INSERT OR UPDATE AS BEGIN IF ( NEW.$seqField IS NULL OR NEW.$seqField = 0 ) THEN NEW.$seqField = GEN_ID(\"$seqname\", 1); END";
		}
		else
		{ $sql[] = "CREATE GENERATOR \"$seqname\"";
		  $sql[] = "CREATE TRIGGER \"$trigname\" FOR $tabname BEFORE INSERT OR UPDATE AS BEGIN IF ( NEW.$seqField IS NULL OR NEW.$seqField = 0 ) THEN NEW.$seqField = GEN_ID(\"$seqname\", 1); END";
		}
		
		$this->seqField = false;
		return $sql;
	}

}


?>